Rita Covas

NONPARAMETRIC ESTIMATION OF NATURAL SELECTION ON A QUANTITATIVE TRAIT USING MARK-RECAPTURE DATA (2006)

Olivier Gimenez, Rita Covas, Charles R. Brown, Mark D. Anderson, Mary Bomberger Brown, Thomas Lenormand

Short Note Pygmy Falcon predation of nestlings of their obligate host, the Sociable Weaver (2005)

Covas, Rita; DST Centre Of Excellence In Birds As Keys To Biodiversity Conservation At The Percy FitzPatrick Institute, University Of Cape Town, Rondebosch 7701, South Africa Present Address: Institut, Huyser, Onno; DST Centre Of Excellence In Birds As Keys To Biodiversity Conservation At The Percy FitzPatrick Institute, University Of Cape Town, Rondebosch 7701, South Africa Present Address: 2 River, Doutrelant, Claire; DST Centre Of Excellence In Birds As Keys To Biodiversity Conservation At The Percy FitzPatrick Institute, University Of Cape Town, Rondebosch 7701, South Africa Present Address: C

Ostrich 2004, 75(4): 325–326

JUVENILE AND ADULT SURVIVAL IN THE SOCIABLE WEAVER (PHILETAIRUS SOCIUS), A SOUTHERN-TEMPERATE COLONIAL COOPERATIVE BREEDER IN AFRICA (2004)

Rita Covas, Charles R. Brown, Mark D. Anderson, Mary Bomberger Brown

Stabilizing selection on body mass in the sociable weaver Philetairus socius.

Covas, Rita, Brown, Charles R, Anderson, Mark D, Bomberger Brown, Mary

The survival of small birds is often believed to increase with increasing body mass, despite some evidence that body mass is usually maintained below the physiological maximum and that there are...

Experimental evidence of a link between breeding conditions and the decision to breed or to help in a colonial cooperative bird.

Covas, Rita, Doutrelant, Claire, Du Plessis, Morné A

In many species mature individuals delay independent reproduction and may help others to reproduce. This behaviour is often explained through ecological constraints, although recently attention has...

Global phylogeographic limits of Hawaii's avian malaria

Beadell, Jon S, Ishtiaq, Farah, Covas, Rita, Melo, Martim, Warren, Ben H, Atkinson, Carter T, ...

The introduction of avian malaria (Plasmodium relictum) to Hawaii has provided a model system for studying the influence of exotic disease on naive host populations. Little is known, however, about...

Life history and the evolution of family living in birds

Covas, Rita, Griesser, Michael

The reason why some bird species live in family groups is an important question of evolutionary biology that remains unanswered. Families arise when young delay the onset of independent reproduction...